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What lies beneath: —-ldquo;PipeFish—-rdquo; robot patrols city pipes to detect underground water leaks

The United States faces a looming crisis over its
deteriorating water infrastructure, and fixing it will be a
monumental and expensive task. In Los Angeles alone, about
two thirds of the city's 7,000 miles of water pipes are more
than 60 years old and nearing the end of their useful lives.